android的刷新方法

public abstract class RefreshAdapter extends RecyclerView.Adapter {

protected Context mContext;
protected List<T> mList;
protected LayoutInflater mInflater;
protected RecyclerView mRecyclerView;
protected OnItemClickListener<T> mOnItemClickListener;

public RefreshAdapter(Context context) {
    this(context, new ArrayList<T>());
}

public RefreshAdapter(Context context, List<T> list) {
    mList = list;
    mContext = context;
    mInflater = LayoutInflater.from(mContext);
    setHasStableIds(true);
}

@Override
public int getItemCount() {
    if (mList != null) {
        return mList.size();
    }
    return 0;
}

public void setOnItemClickListener(OnItemClickListener<T> onItemClickListener) {
    mOnItemClickListener = onItemClickListener;
}

@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
    mRecyclerView = recyclerView;
}

public RecyclerView getRecyclerView() {
    return mRecyclerView;
}

public void setList(List<T> list) {
    if (mList != null) {
        mList.clear();
        mList.addAll(list);
    }
}

public void refreshData(List<T> list) {
    if (mRecyclerView != null && list != null) {
        mList.clear();
        mList.addAll(list);
        notifyDataSetChanged();
    }
}

public void insertList(List<T> list) {
    if (mRecyclerView != null && mList != null && list != null && list.size() > 0) {
        int p = mList.size();
        mList.addAll(list);
        notifyItemRangeInserted(p, list.size());
    }
}

public void clearData() {
    if (mRecyclerView != null && mList != null) {
        mList.clear();
        notifyDataSetChanged();
    }
}

@Override
public long getItemId(int position) {
    return position;
}

protected boolean canClick() {
    return ClickUtil.canClick();
}

public List<T> getList() {
    return mList;
}

}
/**

• Created by cxf on 2017/8/9.
• RecyclerView的Adapter点击事件
  */

public interface OnItemClickListener {
void onItemClick(T bean, int position);
}

/**

• RecyclerView分割线
  */

public class ItemDecoration extends RecyclerView.ItemDecoration {
private static final String TAG = “ItemDecoration”;
private Drawable mDivider;
private int dividerHeight;
private int dividerWidth;
private int dividerColor;
private static final int[] ATTRS = new int[]{android.R.attr.listDivider};
private static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL;
private static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL;
/**
* 设置是否显示左右边界线
/
private boolean drawBorderLeftAndRight = false;
/*
* 设置是否显示上下边界线
*/
private boolean drawBorderTopAndBottom = false;

/**
 * 是否只留空白，不画分割线
 */
private boolean onlySetItemOffsetsButNoDraw=false;

/**
 * 是否是线性布局
 */
private boolean isLinearLayoutManager=true;
/**
 * 布局方向
 */
private int orientation=VERTICAL_LIST;

public ItemDecoration(Context context) {
    final TypedArray a = context.obtainStyledAttributes(ATTRS);
    mDivider = a.getDrawable(0);
    a.recycle();
    this.dividerHeight=mDivider.getIntrinsicHeight();
    this.dividerWidth=mDivider.getIntrinsicWidth();
}

/**
 * 自定义分割线
 *
 * @param context
 * @param drawableId           分割线图片
 */
public ItemDecoration(Context context, @DrawableRes int drawableId) {
    mDivider = ContextCompat.getDrawable(context, drawableId);
    this.dividerHeight=mDivider.getIntrinsicHeight();
    this.dividerWidth=mDivider.getIntrinsicWidth();
}

/**
 * 自定义分割线
 * 也可以使用{@link Canvas#drawRect(float, float, float, float, Paint)}或者{@link Canvas#drawText(String, float, float, Paint)}等等
 * 结合{@link Paint}去绘制各式各样的分割线
 * @param context
 * @param color  整型颜色值，非资源id
 * @param dividerWidth  单位为dp
 * @param dividerHeight  单位为dp
 */
public ItemDecoration(Context context, @ColorInt int color, @Dimension float dividerWidth, @Dimension float dividerHeight) {
    mDivider = new ColorDrawable(color);
    this.dividerWidth= (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,dividerWidth,context.getResources().getDisplayMetrics());
    this.dividerHeight= (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,dividerHeight,context.getResources().getDisplayMetrics());
}


/**
 * 垂直滚动，item宽度充满，高度自适应
 * 水平滚动,item高度充满，宽度自适应
 * 在itemView绘制完成之前调用，也就是说此方法draw出来的效果将会在itemView的下面
 * onDrawOver方法draw出来的效果将叠加在itemView的上面
 * @param c
 * @param parent
 * @param state
 */
@Override
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
    if(onlySetItemOffsetsButNoDraw){
        return;
    }
    if(isLinearLayoutManager){
        drawLinearItemDivider(c,parent);
    }else{
        drawHorizontalLine(c, parent);
        drawVerticalLine(c, parent);
    }

}

private void drawLinearItemDivider(Canvas c, RecyclerView parent){
    int spanCount = getSpanCount(parent);

// int allChildCount = parent.getAdapter().getItemCount();
int top=0,bottom=0,left=0,right=0;
for (int i = 0; i < parent.getChildCount(); i++) {
final View child = parent.getChildAt(i);
final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
if(orientationVERTICAL_LIST){//画横线
left = child.getLeft() - params.leftMargin;
right = child.getRight() + params.rightMargin;
if(drawBorderTopAndBottom){
//加上第一条
if(isFirstRaw(parent,params.getViewLayoutPosition(),spanCount)){
top=child.getTop()-params.topMargin-dividerHeight;
bottom = top + dividerHeight;
mDivider.setBounds(left, top, right, bottom);
mDivider.draw©;
}
}else{
// if(isLastRaw(parent,params.getViewLayoutPosition(),spanCount,allChildCount)){
// continue;
// }
}
top = child.getBottom() + params.bottomMargin;
bottom = top + dividerHeight;
mDivider.setBounds(left, top, right, bottom);
mDivider.draw©;
}else{//画竖线
top=child.getTop()-params.topMargin;
bottom=child.getBottom()+params.bottomMargin;
if(drawBorderLeftAndRight){
//加上第一条
if(isFirstColumn(parent,params.getViewLayoutPosition(),spanCount)){
left=child.getLeft()-params.leftMargin-dividerWidth;
right = left + dividerWidth;
mDivider.setBounds(left, top, right, bottom);
mDivider.draw©;
}
}else{
// if(isLastColum(parent,params.getViewLayoutPosition(),spanCount,allChildCount)){
// continue;
// }
}
left = child.getRight() + params.rightMargin;
right = left + dividerWidth;
mDivider.setBounds(left, top, right, bottom);
mDivider.draw©;
}
}
if(orientationVERTICAL_LIST){
if(drawBorderLeftAndRight){
top = parent.getPaddingTop();
bottom = parent.getHeight() - parent.getPaddingBottom();
left=parent.getPaddingLeft();
right=left+dividerWidth;
//画左边界
mDivider.setBounds(left,top,right,bottom);
mDivider.draw©;
left=parent.getWidth()-parent.getPaddingRight()-dividerWidth;
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